The stomach is a muscular, J-shaped organ situated in the upper left quadrant of the abdomen, acting as a temporary reservoir for ingested food. Anatomically, it is divided into four main regions: the cardia, fundus, body, and pylorus. The gastric wall features specialized cells within its mucosal lining that secrete gastric juice, which is vital for digestion.
Gastritis is an inflammation of the gastric mucosa, categorized primarily as acute or chronic based on the duration and onset of mucosal injury. Acute gastritis often results from sudden mucosal irritants such as nonsteroidal anti-inflammatory drugs (NSAIDs), heavy alcohol consumption, or acute stress. Chronic gastritis persists over a longer period and is commonly linked to Helicobacter pylori infection or autoimmune reactions attacking parietal cells.
The pathophysiology involves a breakdown of the normal gastric mucosal barrier. When this protective layer is compromised, endogenous acid and pepsin diffuse back into the tissue, causing cellular damage, edema, hemorrhage, and local inflammatory responses. While acute forms may heal rapidly once the trigger is removed, chronic gastritis can lead to gastric atrophy and pernicious anemia over time.
Peptic Ulcer Disease (PUD) involves erosive lesions in the mucosal membrane of the gastrointestinal tract exposed to gastric acid and pepsin, most commonly found in the proximal duodenum or the stomach. The two primary etiologies are chronic H. pylori infection and the regular use of NSAIDs, both of which impair mucosal defense mechanisms. Patients typically present with a burning epigastric pain that often correlates with meal timing: gastric ulcers may worsen shortly after eating, whereas duodenal ulcer pain frequently improves with food intake and worsens when the stomach is empty.
Complications of PUD require vigilant nursing observation. Hemorrhage occurs when an ulcer erodes through a blood vessel, leading to hematemesis or melena. Perforation happens when the ulcer creates a full-thickness hole in the stomach or duodenal wall, spilling gastrointestinal contents into the peritoneal cavity and causing sudden, severe abdominal rigidity. Obstruction can also develop due to edema or scar tissue at the pylorus.
Gastric cancer is a malignant neoplasm arising most frequently from the glandular epithelium of the stomach mucosa, with adenocarcinoma accounting for the vast majority of cases. Risk factors include persistent H. pylori infection, diets high in salted or smoked foods, smoking, and a history of gastric polyps or pernicious anemia. Early-stage gastric cancer is often asymptomatic, which frequently delays diagnosis until the disease has advanced.
As the tumor grows, clinical manifestations emerge, including unexplained weight loss, early satiety, persistent abdominal discomfort, and iron-deficiency anemia due to chronic occult blood loss. Metastasis can occur via local extension, lymphatic spread, or hematogenous routes to the liver and peritoneum. Management relies heavily on surgical resection when caught early, supplemented by chemotherapy and radiation therapy.
Comprehensive assessment of a patient with gastric disorders begins with a detailed health history focusing on pain characteristics, dietary habits, medication use, particularly NSAIDs, and a history of H. pylori infection. Physical examination may reveal epigastric tenderness, abdominal distension, or signs of acute peritonitis if a complication has developed.
Diagnostic modalities confirm underlying structural or mucosal pathology:
Medical management of gastric disorders aims to relieve symptoms, promote mucosal healing, eradicate infectious agents, and prevent recurrences. Pharmacotherapy forms the cornerstone of treatment for gastritis and peptic ulcer disease.
Surgical intervention becomes necessary when gastric disorders result in severe complications such as intractable bleeding, perforation, obstruction, or malignant neoplasms. Common procedures include partial gastrectomy, vagotomy to reduce acid secretion by cutting the vagus nerve, and pyloroplasty to widen the pyloric sphincter.
Postoperative nursing care focuses on monitoring vital signs, managing surgical pain, maintaining fluid and electrolyte balance, and carefully managing nasogastric (NG) tube drainage. Nurses must keep the NG tube patent and avoid repositioning or irrigating it without a specific medical order after gastric surgery, as this could disrupt delicate suture lines. Early ambulation and respiratory exercises prevent postoperative pulmonary complications and deep vein thrombosis.
The nursing care plan for patients with gastric disorders addresses priority problems such as acute pain, risk for fluid volume deficit, imbalanced nutrition, and anxiety. Interventions include monitoring vital signs for signs of hemorrhage, administering prescribed medications, and providing tailored dietary guidance.
Patient education must emphasize lifestyle modifications to prevent symptom flare-ups and promote healing. Nurses should instruct patients to avoid known irritants such as NSAIDs, alcohol, caffeine, and spicy foods. In cases involving total or partial gastrectomy, education must include instructions on managing dumping syndrome—characterized by rapid gastric emptying leading to dizziness, sweating, and palpitations—by eating small, frequent meals low in simple sugars and separating liquids from solid food intake.